This is the first of two stories adapted from "Angler: The Cheney Vice Presidency," to be published Tuesday by Penguin Press. EXCERPT: "The United States was at war with al-Qaeda, intelligence-gathering is inherent in war, and the Constitution appoints the president commander in chief. But they had not been asked to give their own written assessments of the legality of domestic espionage. They based their answer in part on the attorney general's certification of the "form and legality" of the president's orders. Yet neither man had been allowed to see the program's codeword-classified legal analyses [5], which were prepared by...